I find it surprising they do all this math since the model they seem to use is "Send everybody tent-like shirts that would fit a horse." After repeated requests

I find it surprising they do all this math since the model they seem to use is "Send everybody tent-like shirts that would fit a horse." After repeated requests for more fitted styles, I kept getting tents (although eventually smaller size tents). I understand why they do this, because this style is likely to fit more people. But if the technique they describe in this post actually works, perhaps they could be more adventurous?